CN102564860B - Rotating joint durability testing principle and full-automatic testing machine - Google Patents
Rotating joint durability testing principle and full-automatic testing machine Download PDFInfo
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- CN102564860B CN102564860B CN201210006446.6A CN201210006446A CN102564860B CN 102564860 B CN102564860 B CN 102564860B CN 201210006446 A CN201210006446 A CN 201210006446A CN 102564860 B CN102564860 B CN 102564860B
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Abstract
A rotating joint durability testing principle and a full-automatic testing machine are applied in the technical field of engineering mechanical test. The full-automatic testing machine comprises a hydraulic loading system, a servo motor driving system and a programmable Logic Controller (PLC) system. During the operation of a rotating joint, the hydraulic loading system input hydraulic oil with rated pressure in an oil channel of the rotating joint, then the servo motor driving system enables the rotating shaft and the casing of the rotating joint to rotate relatively, and adjusts the rotating speed, the rotating direction and the rotating angle of the relative rotation, and finally the PLC measuring and controlling system controls the gain and loss of electricity of electromagnetic valves and the operation of the servo motor, automatically measures the oil temperature, the oil flow quantity, the oil pressure, the driving torque and the rotating speed of the rotating joint, processes signals and displays collected data in real time. The rotating joint durability testing principle and the full-automatic testing machine can simulate the actual working condition of the rotating joint, and research the tightness of the rotating joint sealing member, effects of temperature towards the driving torque and the strength of rotating joint parts under the pressure in the process of 2000-hour running.
Description
Technical field
The present invention relates to a kind of engineering machinery test philosophy and testing equipment, particularly the testing equipment swivel coupling permanance all automatic testing machine of a kind of swivel coupling research aspect.
Background technology
Swivel coupling is the critical component in the engineering machinery such as hydraulic lift, excavator, motorized grader, for connecting hydraulic pressure, the pneumatic line of crane, excavator fixed part and rotating part, make the system pipeline of upper and lower two parts there are 360 ° of relative motions and not interfere.Swivel coupling permanance all automatic testing machine is the testing equipment of a simulation swivel coupling course of work, domestic swivel coupling durability test principle and equipment also remains at low levels at present, only depend on and manually read test parameters, hand filling data, can not show in real time the oil pressure of swivel coupling, driving torque, the performance parameters such as rotating speed, test findings error is larger, drive motor is also often because overload is stuck, in addition, in the fluid passage of swivel coupling, hydraulic loaded pressure is lower, can not carry out endurancing to the high swivel coupling of working pressure, therefore developing a kind of novel swivel coupling durability test principle and testing machine is the problem that domestic urgent need solves.This swivel coupling permanance all automatic testing machine hydraulic loaded pressure can reach 42MPa, can test the swivel coupling of Multiple Type, different profiles simultaneously, has realized first at home the automatic detection of swivel coupling performance parameter, has shown in real time.
Summary of the invention
The object of this invention is to provide a kind of swivel coupling permanance all automatic testing machine that can simulate swivel coupling actual condition, automatically control between the revolving shaft of swivel coupling and housing in relative rotation rotating speed, turn to and corner, show in real time the performance parameter such as oil liquid pressure, driving torque, rotating speed of swivel coupling, sealing on swivel coupling seal, the impact of temperature on driving torque, and swivel coupling under pressure the intensity of part study.
Swivel coupling permanance all automatic testing machine of the present invention, it comprises hydraulic loading system, servo motor driving system, PLC TT&C system, hydraulic loading system is again by high-pressure section, and low-pressure section forms; High-pressure section comprises the first hydraulic pump, the first surplus valve, high pressure generator, the first retaining valve, bi-bit bi-pass Solenoid ball valve, cooler; Low-pressure section comprises the second hydraulic pump, the second retaining valve, the second surplus valve, 3-position 4-way solenoid directional control valve, one-way speed-regulating valve; Servo motor driving system comprises servomotor, planetary reduction gear, axle, bevel gear, swivel coupling unit clamp, swivel coupling, rolling bearing; PLC TT&C system comprises temperature sensor, flow sensor, pressure transducer, Torque and speed sensor, PLC slave computer, PC host computer.
When the work of swivel coupling permanance all automatic testing machine, the first hydraulic pump of high-pressure section starts, the electromagnet 1YA power-off of bi-bit bi-pass Solenoid ball valve, the first hydraulic pump output hydraulic pressure oil enters high pressure generator, the hydraulic oil that high pressure generator flows out is through the first retaining valve, enter several high-pressure channels of swivel coupling simultaneously, swivel coupling high-pressure channel is pressurizeed, the second hydraulic pump of low-pressure section starts, the electromagnet 2YA of 3-position 4-way solenoid directional control valve obtains electric, the second hydraulic pump output hydraulic pressure oil is through the second retaining valve, the left position of 3-position 4-way solenoid directional control valve enters the low-pressure channel of swivel coupling, the hydraulic oil flowing out from low-pressure channel is through one-way speed-regulating valve, the left bit stream oil return of 3-position 4-way solenoid directional control valve case, realize low-pressure channel pressurization, after planetary reduction gear reduction of speed, driven bevel-gear sett to rotate by the servomotor in servo motor driving system, bevel gear, swivel coupling unit clamp drive revolving shaft or the housing of swivel coupling to relatively rotate, and are regulated in relative rotation rotating speed, turned to and corner by servomotor.Detected respectively oil temperature, fluid flow, oil liquid pressure, driving torque and the rotating speed of swivel coupling by temperature sensor, flow sensor, pressure transducer, moment of torsion and speed probe in PLC TT&C system, by the dead electricity that obtains of PLC slave computer control solenoid valve, control servomotor rotating speed, turn to and corner, PC is responsible for sensor sample and A/D conversion, and show in real time and driving torque and the rotary speed data of the oil temperature that collects, fluid flow, oil liquid pressure, swivel coupling generate pressure history.
In the operation process of 2000 hours, detect oil liquid pressure delta data by observing pressure transducer, judge the internal leakage situation of swivel coupling, bore hole observe and decide swivel coupling has or not external leakage, thereby the sealing of research seal, observe the delta data of Torque and speed driving torque that sensor detects, impact on driving torque after research swivel coupling temperature raises, whether the part of checking swivel coupling in operational process damages under pressure, research part intensity under pressure.
In the time that temperature sensor detection oil temperature reaches 50 DEG C, swivel coupling stops relatively rotating, the electromagnet 1YA of bi-bit bi-pass Solenoid ball valve obtains electric, the electromagnet 3YA of 3-position 4-way solenoid directional control valve obtains electric, cooler starts, the first hydraulic pump output hydraulic pressure oil of high-pressure section enters high pressure generator, the hydraulic oil that high pressure generator flows out is through the first retaining valve, enter several high-pressure channels of swivel coupling simultaneously, high-pressure channel efflux force feed is through the right bit stream oil return of bi-bit bi-pass Solenoid ball valve case, and the second hydraulic pump efflux force feed of low-pressure section is through the second retaining valve, the right position of 3-position 4-way solenoid directional control valve, one-way speed-regulating valve enters the low-pressure channel of swivel coupling, the hydraulic oil flowing out from low-pressure channel is through the right bit stream oil return of 3-position 4-way solenoid directional control valve case, pilot system circulating cooling.When temperature sensor detects oil temperature while reaching 30 DEG C, the electromagnet 1YA power-off of bi-bit bi-pass Solenoid ball valve, the electromagnet 2YA of 3-position 4-way solenoid directional control valve obtains electric, the testing machine process of starting working again.
Main points of the present invention are its test philosophy and structure, its test philosophy is to adopt high-pressure channel, the low-pressure channel of hydraulic system to swivel coupling to pressurize, the hydraulic oil of high-pressure channel is that double acting Automatic-boosting cylinder produces by high pressure generator, pressure can reach 42MPa, and the low pressure oil pressure of low-pressure channel regulates by one-way speed-regulating valve; After planetary reduction gear reduction of speed, driven bevel-gear sett to rotate by servomotor, bevel gear, swivel coupling unit clamp drive revolving shaft or the housing of swivel coupling to relatively rotate, and rotating speed, turn to and corner all can regulate automatically; Finally by the running of PLC TT&C system control servomotor, solenoid valve dead electricity, automatically detect oil temperature, fluid flow, oil liquid pressure, driving torque and the rotating speed of swivel coupling, and the real-time parameter of surveying that shows, realize the automatic detection of swivel coupling performance parameter, swivel coupling in relative rotation rotating speed, turn to and the automatic control of corner, will be widely used in the experimental technique field of swivel coupling.
Brief description of the drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is hydraulic loading system schematic diagram of the present invention
Fig. 3 is servo motor driving system structural drawing of the present invention
Embodiment
With reference to accompanying drawing, swivel coupling permanance all automatic testing machine comprises hydraulic loading system 1, servo motor driving system 2, PLC TT&C system 3.Hydraulic loading system is by high-pressure section, low-pressure section composition, the first hydraulic pump 4 of high-pressure section starts, the 11 electromagnet 1YA power-off of bi-bit bi-pass Solenoid ball valve, hydraulic pump output hydraulic pressure oil enters high pressure generator 8, the hydraulic oil that high pressure generator 8 flows out, through the first retaining valve 9, enters several high-pressure channels of swivel coupling simultaneously, and swivel coupling high-pressure channel is pressurizeed.The second hydraulic pump 13 of low-pressure section starts, 3-position 4-way solenoid directional control valve 17 electromagnet 2YA obtain electric, the second hydraulic pump 13 output hydraulic pressure oil are through the second retaining valve 14, the left position of 3-position 4-way solenoid directional control valve 17 enters the low-pressure channel of swivel coupling, the hydraulic oil flowing out from low-pressure channel is through one-way speed-regulating valve 21, and the left bit stream oil return of 3-position 4-way solenoid directional control valve 17 case, by regulating the flow area of one-way speed-regulating valve 21, make low-pressure channel set up required pressure, realize low-pressure channel pressurization.
The servomotor 22 of described servo motor driving system starts, after planetary reduction gear 23 reductions of speed, be with dynamic bevel gear 25 to rotate, bevel gear 25 is with dynamic bevel gear 26 to rotate, drive the revolving shaft of swivel coupling 28 or housing to relatively rotate by bevel gear 26 and unit clamp 27, carry out adjusting rotary speed, turn to and corner by servomotor, change unit clamp 27 and can test the swivel coupling of different model.
Temperature sensor 5,19,20 detects the oil temperature of swivel coupling, flow sensor 7,16 detects by swivel coupling fluid flow, the oil liquid pressure that is detected swivel coupling by pressure transducer 10,18, moment of torsion and speed probe 24 detect driving torque and the rotating speed of swivel coupling.By the dead electricity that obtains of PLC slave computer control two-position two-way solenoid valve 11,3-position 4-way solenoid directional control valve 17, control servomotor 22 rotating speed, turn to and corner, PC host computer is responsible for sensor sample and A/D conversion, and show in real time and driving torque and the rotary speed data of the oil temperature that collects, fluid flow, oil liquid pressure, swivel coupling generate pressure history.
In the operation process of 2000 hours, by observing pressure transducer 10, the 18 oil liquid pressure delta datas that detect, judge the internal leakage situation of swivel coupling, bore hole observe and decide swivel coupling has or not external leakage, thus the sealing of research seal.Observe the delta data of Torque and speed sensor 24 driving torques that detect, the impact on driving torque after research swivel coupling temperature raises.Whether the part of checking swivel coupling in operational process damages under pressure, research part intensity under pressure.
In the time that temperature sensor 5 detects oil temperature and reaches 50 DEG C, swivel coupling stops relatively rotating, bi-bit bi-pass Solenoid ball valve 11 electromagnet 1YA obtain electric, 3-position 4-way solenoid directional control valve 17 electromagnet 3YA obtain electric, cooler 12 starts, the first hydraulic pump 4 output hydraulic pressure oil enter high pressure generator 8, the hydraulic oil that high pressure generator 8 flows out is through the first retaining valve 9, enter several high-pressure channels of swivel coupling simultaneously, high-pressure channel efflux force feed is through the right bit stream oil return of bi-bit bi-pass Solenoid ball valve 11 case, and the second hydraulic pump 13 efflux force feeds are through the second retaining valve 14, the right position of 3-position 4-way solenoid directional control valve 17, one-way speed-regulating valve 21 enters the low-pressure channel of swivel coupling, the hydraulic oil flowing out from low-pressure channel is through the right bit stream oil return of 3-position 4-way solenoid directional control valve 17 case, pilot system circulating cooling.In the time that temperature sensor 5 detects oil temperature and reaches 30 DEG C, the 11 electromagnet 1YA power-off of bi-bit bi-pass Solenoid ball valve, 3-position 4-way solenoid directional control valve 17 electromagnet 2YA obtain electric, the testing machine process of starting working again.
Claims (3)
1. a swivel coupling permanance all automatic testing machine, it is characterized in that: swivel coupling permanance all automatic testing machine comprises hydraulic loading system (1), servo motor driving system (2), PLC TT&C system (3), hydraulic loading system is again by high-pressure section, and low-pressure section forms; High-pressure section comprises the first hydraulic pump (4), the first surplus valve (6), high pressure generator (8), the first retaining valve (9), bi-bit bi-pass Solenoid ball valve (11), cooler (12); The motor of high-pressure section is connected with the first hydraulic pump (4), the first hydraulic pressure delivery side of pump is by the first surplus valve (6) connected tank, the first hydraulic pump is connected with the high-pressure channel of swivel coupling by high pressure generator (8), the first retaining valve (9) simultaneously, and high-pressure channel is again by bi-bit bi-pass Solenoid ball valve (11) connected tank; Low-pressure section comprises the second hydraulic pump (13), the second retaining valve (14), the second surplus valve (15), 3-position 4-way solenoid directional control valve (17), one-way speed-regulating valve (21); The motor of low-pressure section is connected with the second hydraulic pump (13), the second hydraulic pressure delivery side of pump is by the second surplus valve (15) connected tank, the second hydraulic pump is connected with the low-pressure channel of swivel coupling by the second retaining valve (14), 3-position 4-way solenoid directional control valve (17) simultaneously, and low-pressure channel is by one-way speed-regulating valve (21), 3-position 4-way solenoid directional control valve (17) connected tank; Servo motor driving system comprises servomotor (22), planetary reduction gear (23), axle (31), bevel gear (25,26), swivel coupling unit clamp (27), swivel coupling (28), rolling bearing (29,30); Servomotor (22) is connected with planetary reduction gear (23) by screw, planetary reduction gear is connected with Torque and speed sensor (24) by shaft coupling, Torque and speed sensor is connected with a bevel gear (25) by shaft coupling again, another bevel gear (26) is connected with unit clamp (27) by screw, unit clamp is connected with swivel coupling (28) by screw again, bevel gear (26) is contained on axle (31), and by rolling bearing (29,30) supporting, axle (31) is fixed by screws on base plate; PLC TT&C system comprises temperature sensor (5,19,20), flow sensor (7,16), pressure transducer (10,18), Torque and speed sensor (24), PLC slave computer, PC host computer.
2. according to the swivel coupling permanance all automatic testing machine described in claims 1, it is characterized in that: when swivel coupling durability test principle and testing machine work, the electromagnet 1YA power-off of bi-bit bi-pass Solenoid ball valve (11) in hydraulic loading system (1), the electromagnet 2YA of 3-position 4-way solenoid directional control valve (17) obtains electric, hydraulic pump (4) hydraulic oil of exporting enters respectively the high-pressure channel of swivel coupling, hydraulic pump (13) output low pressure oil enters low-pressure channel, swivel coupling (28) is pressurizeed, hydraulic oil is that double acting Automatic-boosting cylinder produces by high pressure generator (8), pressure can reach 42MPa, low pressure oil pressure regulates by one-way speed-regulating valve (21), after planetary reduction gear (23) reduction of speed, driven bevel-gear sett (25,26) to rotate by the servomotor (22) in servo motor driving system (2), bevel gear (26), swivel coupling unit clamp (27) drive revolving shaft or the housing of swivel coupling (28) to relatively rotate, and are regulated in relative rotation rotating speed, turned to and corner by servomotor (22), by temperature sensor (5 in PLC TT&C system (3), 19, 20), flow sensor (7, 16), pressure transducer (10, 18), Torque and speed sensor (24) detects respectively the oil temperature of swivel coupling, fluid flow, oil liquid pressure, driving torque and rotating speed, by the dead electricity that obtains of PLC slave computer control solenoid valve, control the rotating speed of servomotor, turn to and corner, PC is responsible for sensor sample and A/D conversion, and the oil temperature that demonstration collects in real time, fluid flow, oil liquid pressure, the driving torque of swivel coupling and rotary speed data, generate pressure history.
3. according to the swivel coupling permanance all automatic testing machine described in claims 2, it is characterized in that: in the operation process of 2000 hours, pass through to observe pressure transducer (10,18) the oil liquid pressure delta data that detects, judge the internal leakage situation of swivel coupling, bore hole observe and decide swivel coupling has or not external leakage, thus the sealing of research seal; Observe the delta data of Torque and speed sensor (24) driving torque that detects, the impact on driving torque after research swivel coupling temperature raises; In the process of operation, check whether the part of swivel coupling damages, research part intensity under pressure.
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| CN201210006446.6A CN102564860B (en) | 2012-01-11 | 2012-01-11 | Rotating joint durability testing principle and full-automatic testing machine |
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| CN201210006446.6A CN102564860B (en) | 2012-01-11 | 2012-01-11 | Rotating joint durability testing principle and full-automatic testing machine |
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| CN102564860B true CN102564860B (en) | 2014-08-06 |
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| CN102944365B (en) * | 2012-12-07 | 2015-07-22 | 柳州柳工液压件有限公司 | Method and device for testing durability of central rotary joint |
| CN103148989B (en) * | 2013-02-04 | 2015-12-02 | 柳州博实唯汽车科技有限公司 | The axial wobble device of joint tighness commissioning device |
| CN103134642B (en) * | 2013-02-04 | 2016-03-09 | 柳州博实唯汽车科技有限公司 | The five degree of freedom Butt sealing commissioning device of joint |
| CN104236821B (en) * | 2013-06-18 | 2017-08-01 | 上海烟草集团有限责任公司 | Swivel seal detection means and its detection method |
| CN103558023A (en) * | 2013-11-08 | 2014-02-05 | 徐州徐工液压件有限公司 | Central swivel joint testing apparatus |
| CN103591085B (en) * | 2013-11-28 | 2016-03-02 | 徐州徐工液压件有限公司 | For the full hydraulic power formula performance test apparatus of center-rotary joint |
| CN105784348A (en) * | 2016-04-22 | 2016-07-20 | 无锡工艺职业技术学院 | Construction machinery swivel joint plant test system and operation method thereof |
| CN105806610A (en) * | 2016-05-12 | 2016-07-27 | 杭州佳航过滤器有限公司 | Rotary joint service life testing table for fluid conveying |
| CN107246958B (en) * | 2017-07-03 | 2020-04-14 | 上海隧道工程有限公司 | Performance test equipment and method for central rotary joint of shield tunneling machine |
| CN108692189A (en) * | 2018-05-29 | 2018-10-23 | 山东华鹏精机股份有限公司 | Rotary joint safety monitoring system and monitoring method |
| CN110631921A (en) * | 2019-09-06 | 2019-12-31 | 北华大学 | Special pressurizing detection mould for rotary joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101153835B (en) * | 2006-09-27 | 2011-02-09 | 中国石油大学(北京) | Sliding desk type casing tube abrasion testing machine |
| CN201069424Y (en) * | 2007-08-01 | 2008-06-04 | 合肥通用机械研究院 | 350MPa ultra-high pressure fatigue test system |
| CN201177588Y (en) * | 2008-03-21 | 2009-01-07 | 江苏武进液压启闭机有限公司 | Ceramic piston-rod anti-fatigue curve performance test machine |
| CN201757728U (en) * | 2010-06-29 | 2011-03-09 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Center swivel joint endurance test device |
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Effective date of registration: 20180717 Address after: 214422 No. 885 Yungu Road, Yunting Street, Jiangyin City, Jiangsu Province Patentee after: Jiangyin Changling Machinery Manufacturing Co., Ltd. Address before: No. 159, dragon pan Road, Nanjing, Jiangsu Patentee before: Nanjing Forestry University |
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Address after: 214422 No. 885 Yungu Road, Yunting Street, Jiangyin City, Jiangsu Province Patentee after: Jiangsu Changling hydraulic Limited by Share Ltd Address before: 214422 No. 885 Yungu Road, Yunting Street, Jiangyin City, Jiangsu Province Patentee before: Jiangyin Changling Machinery Manufacturing Co., Ltd. |
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